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Calculate the average life of a radioact...

Calculate the average life of a radioactive substance whose half-life period is 100 years.

Text Solution

Verified by Experts

Given `t_(1//2) = 100` years
We know that average life `= 1.44 xx t_(1//2)`
`= 1.44 xx 100`
`= 144` years
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Knowledge Check

  • Half life of a radioactive substance with progress of time

    A
    increase
    B
    decrease
    C
    remain same
    D
    none

  • The half-life of a radioactive substance is 10 days. This means that

    A
    the substance completely disintergrates in 20 days
    B
    the substance completely disintergrates in 40 days
    C
    `1//8` part of the mass of the substance will be ledt intact at the end of 40 days
    D
    `7//8` part of the mass of the substance disintegrates in 30 days

  • The time taken by a radioactive substance with a long half-life period to completely disintegrate is

    A
    1
    B
    0
    C
    infinite
    D
    none of these

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